英语词汇一旦出了差错是什么意思，一旦出了差错的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-电脑手机教程网

单词	一旦出了差错
释义	DEFINITIVE EXAMPLES 权威例句〔backup〕Remember, your colleagues are your backup system when things go wrong.记住，一旦出了差错，你的同事就是你的后援。剑桥高阶
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